Or do developers see their game(Armello) as a platform that delivers(?) DLC to their customers.
Because if they do, it's quiet logical for them to try to stop potential "whales" from getting their DLC-fix by not so legitimate ways.
But if it's true does it means that their game will end as a glorified DLC(-pushing) store?

When it's done? How long it took for DX9 to mature?
Don't get me wrong, I would love to see DX11, especially when all the new Dark Souls games are released with DX11 support, but Wine developers resources are limited and it might take some time. More than I would like.

It would make sense if Valve put any substantial effort to manage Steam as a platform and not allow literally everyone squeez their turds into it. And there are numerous examples starting with Guise of the Wolf and Slaughtering Grounds.